Gatsby Category Count

19 Dec 2020 in TIL

Whilst rebuilding this blog I wanted to recategorise all of the existing posts. Before doing so, I wanted to see what all of my existing categories were and how many posts I had in each category.

Using graphql and the GraphQL explorer I could run a query to group by frontmatter___category and return the total count

allMarkdownRemark {
group(field: frontmatter___category) {